Red Blaster Demo Updated to 1.1 — Red Blaster Steam update #190613

Last major update regarding the Demo for Red Blaster, in which the changes will be included in the launch build of the game. Major changes include: a total overhaul of the in-game rolling background, added two new powerups, an overhaul of the upgrades shop menu and further levels and enemy balancing. Changelog: - upgraded the rolling in-game background from a simple checkered image to different procedurally generated "boards" I call them; - added 2 powerups that have a chance to spawn when destroying certain enemies: a lightning powerup that increases fire-rate and a shield powerup which makes the player invulnerable to enemies and their projectiles; each powerup lasts for 5 seconds and can be active simultaneously - overhauled the shop menu to better streamline upgrades and values when changed and upgraded, better values' cost visibility and added a weapon stats info box - changed the b...